fitness
n. 健康；（生物体的）环境适度；适合，胜任
例句
He's too hung up about fitness.
他对健身过于忧心忡忡。
《牛津词典》
Fitness has become an obsession with him.
他迷上了健身。
The long climb tested our fitness and stamina.
那次长距离爬山是对我们健康状况和耐力的考验。
